Search found 976 matches

by Pernod
Sun Nov 19, 2017 12:09 pm
Forum: archive requests
Topic: Electron Solidisk EFS
Replies: 0
Views: 29

Electron Solidisk EFS

Anyone have a dump of the 32K ROM (27256) found in the Solidisk EFS for the Electron? It contains both DFS and ADFS in a single ROM.
by Pernod
Sun Nov 19, 2017 12:06 pm
Forum: hardware
Topic: read / write to JIM
Replies: 28
Views: 527

Re: read / write to JIM

hoglet wrote:
Pernod wrote: 3000 when 0xFCFF & 0xF = ?

It's actually 0xFCFF & 0xF0 = 0x50

Thanks, surprised I missed that, especially with it being so recent.
by Pernod
Sun Nov 19, 2017 11:40 am
Forum: hardware
Topic: read / write to JIM
Replies: 28
Views: 527

Re: read / write to JIM

Is there any record of who does what with the 1MHz bus that's at all up to date? I've been looking at various devices over the past few months for emulating them in MAME. The following are all devices that use JIM that I know of: Torch Graduate - Paging register at &FCFF to page into JIM 32 pag...
by Pernod
Mon Nov 13, 2017 10:03 pm
Forum: emulators
Topic: MAME: Tube devices
Replies: 66
Views: 2588

Re: MAME: Tube devices

It's now working with the ROM paging, yay! My problem was using 32bit handlers for the RAM, now using 8bit. Now which ROMs are known to be good? I have 7 different versions. ROM_SYSTEM_BIOS(0, "100jgh", "Executive v1.00 (6th June 1986)") ROMX_LOAD("Eval100.rom", CRC(e59...
by Pernod
Mon Nov 13, 2017 7:25 pm
Forum: emulators
Topic: MAME: Tube devices
Replies: 66
Views: 2588

Re: MAME: Tube devices

I tried changing how the device starts, by copying the ROM into RAM instead of paging it, and now it works. This isn't how the hardware works so I still need to find out why it failed before and fix it, but I now know where to look. Thanks for the help, but no need to continue comparing traces. 0031...
by Pernod
Mon Nov 13, 2017 5:47 pm
Forum: emulators
Topic: MAME: Tube devices
Replies: 66
Views: 2588

Re: MAME: Tube devices

I didn't make any manual edits, this is what the MAME debugger produces by default. I see I can use noloop to disable loop detection. The attached is using the same Brazil -.005 ROM, with a single *HELP. I now have 7 ROMs that all vary slightly, some more than others, and all have the same outcome. ...
by Pernod
Mon Nov 13, 2017 3:19 pm
Forum: emulators
Topic: MAME: Tube devices
Replies: 66
Views: 2588

Re: MAME: Tube devices

Haven't tried 1.01 yet, but here's a trace from typing:
*HELP
*.
*ROMS

Appreciate you taking a look. ARM code doesn't mean much to me unfortunately.
by Pernod
Mon Nov 13, 2017 12:04 pm
Forum: emulators
Topic: MAME: Tube devices
Replies: 66
Views: 2588

Re: MAME: Tube devices

It's not submitted yet so not on Github. Here's the co-processor code but not likely to tell you much unless you're familiar with the MAME macros. // license:BSD-3-Clause // copyright-holders:Nigel Barnes /********************************************************************** Acorn ANC13 ARM Evaluat...
by Pernod
Mon Nov 13, 2017 11:34 am
Forum: emulators
Topic: MAME: Tube devices
Replies: 66
Views: 2588

Re: MAME: Tube devices

hoglet wrote:Does escape have any effect?

0030.png
by Pernod
Mon Nov 13, 2017 11:24 am
Forum: emulators
Topic: MAME: Tube devices
Replies: 66
Views: 2588

Re: MAME: Tube devices

Moving on to the ARM Evaluation System: 0008.png It's running but not responding to any input, can anyone suggest why this would happen? I have the ROM located at 0x3000000 and at reset also paged into 0x00000000 to provide the vectors. Then according to the PAL it is paged out of the RAM region upo...
by Pernod
Sun Nov 12, 2017 11:41 am
Forum: software: other
Topic: PlayUEF v1.0 beta released
Replies: 17
Views: 453

Re: PlayUEF v1.0 beta released

I have yet to find a title that uses the so called security waves, most of them I think are as a result of the recording/duplicating equipment that was used and nothing to do with copy protection. I have a Python script that can quickly parse a folder full of UEF's. I could configure it to identify...
by Pernod
Sat Nov 11, 2017 12:13 pm
Forum: hardware
Topic: Beeb Repair
Replies: 7
Views: 324

Re: Beeb Repair

The ashtray was never intended to house a zif socket. It contained two cartridge sockets that were installed with the Speech upgrade.
by Pernod
Sat Nov 11, 2017 11:51 am
Forum: hardware
Topic: Torch Graduate
Replies: 18
Views: 1256

Re: Torch Graduate

Sorry, thickie question here - I didn't know what the Torch Graduate is so headed over to Chris's Acorns. Do I take it it is a co-processor that implements a sort of "PC in a box" that uses the Beeb as a keyboard / display? Yep, just connects to the 1MHz bus to use the Beeb for keyboard, ...
by Pernod
Sat Nov 11, 2017 11:39 am
Forum: hardware
Topic: Torch Graduate
Replies: 18
Views: 1256

Re: Torch Graduate

I now have the ROMs, thanks Jules Richardson, and am trying to get the thing running in MAME. This won't be easy without schematics but worth a challenge. The I8088 side is standard IBM-PC and so fairly straightforward, and is running, albeit minus the 1770 being hooked up. The 6502 ROM does contain...
by Pernod
Tue Nov 07, 2017 1:40 am
Forum: software: classic games
Topic: Repton Infinity High Score Anagrams
Replies: 21
Views: 2077

Re: Repton Infinity High Score Anagrams

Filled in some of the blanks: LORINDA GIANT = NATIONAL GRID OSWIN MILLIBAR = ROBIN WILLIAMS AXEL TREESPANKER = EXTERNAL SPEAKER FIONA THERMO = FAITH NO MORE LESLIE CRANIUMS = NUCLEAR MISSILE SUSIE GLANCE = ALEC GUINESS ENOCH MEMORIAL = KESTER FINNAN = FRANKENSTEIN PETER SUNRISES = USS ENTERPRISE RUP...
by Pernod
Sun Nov 05, 2017 8:33 pm
Forum: hardware
Topic: LVL DOS Error
Replies: 9
Views: 270

Re: LVL DOS Error

Oh right. I don't think I knew it was missing. I have several LVL DOS related items, all in storage, including a non-working BBC B with LVL DOS board, which looks to have quite a few chips missing: Thanks for the photos, much better quality than those at http://chrisacorns.computinghistory.org.uk/8...
by Pernod
Sun Nov 05, 2017 8:13 pm
Forum: projects
Topic: Cowgol: actually a thing
Replies: 14
Views: 543

Re: Cowgol: actually a thing

Also, the time spent doing every chunk of work is just enough time for the floppy drive to spin down, so there's more time waste waiting for it to spin up again. Isn't this configurable somewhere? Are you referring to the disc timings set by the keyboard dipswitch? If yes then these can be set from...
by Pernod
Sun Nov 05, 2017 11:53 am
Forum: software: other
Topic: Any scan of the Torch Software Catalogue?
Replies: 2
Views: 77

Re: Any scan of the Torch Software Catalogue?

BigEd wrote:That Software Catalogue was available from Torch for a nominal fee - anyone got one or have a scan of it?

http://chrisacorns.computinghistory.org ... _Mar84.pdf
by Pernod
Fri Nov 03, 2017 11:28 pm
Forum: general
Topic: Computer Shops From Back In The Day
Replies: 59
Views: 5205

Re: Computer Shops From Back In The Day

I more frequently visited the shop on Ivegate I think it was, just up from Market Street, was that where Eltec moved to from Manningham Lane? I visited them on Manningham but it was a bit of a trek on a lunchtime. The one on Ivegate was near to the Thurstons, yum!! Yep, that was Eltec. Am sure ther...
by Pernod
Fri Nov 03, 2017 3:46 pm
Forum: hardware
Topic: My Master is back from the dead
Replies: 17
Views: 1064

Re: Henson CFA 3000

I've been taking a closer look at this in order to get it running and have made some progress. Links First of all the links LK18 and LK19 are obviously set for ROM in IC41 and IC37 respectively. Userport From looking at the SETUP program, which is in BASIC, it expects a keyboard on the userport. The...
by Pernod
Wed Nov 01, 2017 1:42 pm
Forum: software: classic games
Topic: Best 16K commercial games ?
Replies: 9
Views: 522

Re: Best 16K commercial games ?

I did start with the Model A and mostly enjoyed Invaders from Arcade Action and I.J.K.'s Candyfloss.

There aren't that many Model A only games available. Most are MODE7 only but there are a couple that stand out:
Asteroid Belt - Computer Concepts
Savage Pond - ASP/Bug Byte
by Pernod
Wed Nov 01, 2017 11:54 am
Forum: software
Topic: Archimedes Hard Disc Utilities Disc - Watford Electronics
Replies: 0
Views: 104

Archimedes Hard Disc Utilities Disc - Watford Electronics

Here's Watford's Hard Disc Utilities Disc.
by Pernod
Wed Nov 01, 2017 11:51 am
Forum: software
Topic: Euclid - Ace Computing
Replies: 0
Views: 98

Euclid - Ace Computing

Here's an earlier version of Euclid than the one floating around out there.
by Pernod
Wed Nov 01, 2017 11:47 am
Forum: software
Topic: Acorn ANSI C Release 2
Replies: 0
Views: 95

Acorn ANSI C Release 2

Here's Acorn ANSI C Release 2.
by Pernod
Tue Oct 31, 2017 7:58 pm
Forum: hardware
Topic: LVL DOS Error
Replies: 9
Views: 270

Re: LVL DOS Error

Unfortunately there's is almost nothing known about LVL Dos, no manuals have ever been found. It really needs someone to disassemble the ROM to determine how it works. I did find a review in Acorn User Feb.84, which states: Switching between double and single density is extremely simple: an extensio...
by Pernod
Mon Oct 30, 2017 8:13 pm
Forum: hardware
Topic: Watford Electronics ROM/RAM board
Replies: 3
Views: 123

Re: Watford Electronics ROM/RAM board

Thanks
by Pernod
Mon Oct 30, 2017 12:17 am
Forum: general
Topic: Who saw the BBC II Micro?
Replies: 8
Views: 324

Re: Who saw the BBC II Micro?

You do realise this was in an April issue!
by Pernod
Sun Oct 29, 2017 11:33 am
Forum: archive submissions
Topic: Superior Software -Games On Disc
Replies: 20
Views: 1291

Re: Superior Software -Games On Disc

Thanks for these, and the Magic Mushrooms demo that I was previously unaware of. Anyone know of any others out there?
by Pernod
Sat Oct 28, 2017 5:55 pm
Forum: archive submissions
Topic: Superior Software -Games On Disc
Replies: 20
Views: 1291

Re: Superior Software -Games On Disc

Wasn't there also a demo of Revs out there somewhere?
by Pernod
Sat Oct 28, 2017 2:31 pm
Forum: archive submissions
Topic: Superior Software -Games On Disc
Replies: 20
Views: 1291

Re: Superior Software -Games On Disc

vanekp wrote:Have a Acornsoft Demo disk
its a DSD as it has the actual games on it as well (side2)
Peter.

There's another version of this floating around that doesn't include Magic Mushrooms, and also doesn't include the option to (R)un program.

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